公开(公告)号：US20040212432A1

公开(公告)日：2004-10-28

申请号：US10811388

申请日：2004-03-29

Applicant: Renesas Technology Corp.

Inventor： Kyoichi Takahashi ,  Shinji Yamada ,  Masashi Maruyama

IPC: H03G003/10

CPC classification number: H03F1/0272 ,  H03G3/004 ,  H03G3/3047

Abstract: In a radio communication system wherein the detection of output level required for feedback control of output power is carried out by current detection, the stability of control loop and the response to change in request-to-send level are enhanced. An electronic component for high frequency power amplifier carries out the detection of output level, required for feedback control of the output power of a high frequency power amplification circuit, by current detection. The electronic component has an error amplifier. The error amplifier compares an output level detection signal with an output level instruction signal, and generates a signal for controlling the gain of the high frequency power amplification circuit according to the difference between them. For the error amplifier, a low-pass amplification circuit is used. The amplification circuit is provided with between its output terminal and its inverting input terminal with a phase compensation circuit. The phase compensation circuit comprises a resistance element, and another resistance element and a capacitive element in series connected in parallel with the resistance element.

Abstract translation: 在通过电流检测来进行对输出功率的反馈控制所需的输出电平的检测的无线通信系统中，控制环路的稳定性以及请求发送电平变化的响应得到增强。 用于高频功率放大器的电子部件通过电流检测来执行对高频功率放大电路的输出功率的反馈控制所需的输出电平的检测。 电子元件具有误差放大器。 误差放大器将输出电平检测信号与输出电平指令信号进行比较，并根据它们之间的差异产生用于控制高频功率放大电路的增益的信号。 对于误差放大器，使用低通放大电路。 放大电路在其输出端子和其反相输入端子之间设置有相位补偿电路。 相位补偿电路包括电阻元件和与电阻元件并联连接的另一个电阻元件和电容元件。